A global buffer overflow in OptiPNG 0.7.6 allows remote attackers to cause a…
Priority LOW 38CWE-119Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
A global buffer overflow in OptiPNG 0.7.6 allows remote attackers to cause a denial-of-service attack or other unspecified impact with a maliciously crafted GIF format file, related to an uncontrolled loop in the LZWReadByte function of the gifread.c file.
Why it matters now
EPSS 0.01864 79th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:optipng_project:optipng:0.7.6:*:*:*:*:*:*:* | 0.7.6 | Vulnerable | Optipng Project |
- cpe:2.3:a:optipng_project:optipng:0.7.6:*:*:*:*:*:*:* Versions 0.7.6 Vulnerable ·Optipng Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-16938
- 2026-10-03 Alias added: GHSA-78q2-wp6j-q4hp
References
More Optipng Project Optipng vulnerabilities
- TI-2023-23565 OptiPNG v0.7.7 was discovered to contain a global buffer overflow via the 'buffer' variable at gifread.c. CVSS 3.1HIGH 7.8
- TI-2015-06479 Use-after-free vulnerability in OptiPNG 0.6.4 allows remote attackers to execute arbitrary code via a crafted PNG file. CVSS 3.0HIGH 8.8
- TI-2016-03383 Off-by-one error in the bmp_rle4_fread function in pngxrbmp.c in OptiPNG before 0.7.6… CVSS 3.0HIGH 8.8
- TI-2016-03382 Heap-based buffer overflow in the bmp_read_rows function in pngxrbmp.c in OptiPNG before… CVSS 3.0HIGH 7.8
- TI-2017-14545 Integer overflow bug in function minitiff_read_info() of optipng 0.7.6 allows an attacker… CVSS 3.0HIGH 7.8
- TI-2009-00714 Use-after-free vulnerability in the GIFReadNextExtension function in… CVSS 3.1HIGH 7.8
Sources
- CVE-2017-16938 · CVE Program
- CVE-2017-16938 · NVD
- FIRST EPSS
- GHSA-78q2-wp6j-q4hp · GitHub Advisory Database · CC BY 4.0
- CVE-2017-16938 · Red Hat security data · CC BY 4.0
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